Today , i have done the bios mod for my P5E3 Pro , and then i inserted the cert. and the OEM key ,found in the key topic , for Windows 7 ultimate , Asus SLIC. I have used this key 2Y4WT-DHTBF-Q6MMK-KYK6X-VKM6G (XXXXX-OEM-8992662-00173 --- ASUS) Product Key : 2Y4WT-DHTBF-Q6MMK-KYK6X-VKM6G Validity : Valid Product ID : XXXXX-OEM-8992662-00173 Activation ID : 7cfd4696-69a9-4af7-af36-ff3d12b6b6c8 Edition Type : Ultimate Edition ID : X15-37374 Key Type : OEM:SLP Crypto ID : 178 This key is also valid when you have your windows 7 in Spanish ? I need to change the key? Windows says that is activated , but i have read that if the key is not correct for your language when installed Wat, windows will be deactivated. How i know that my cert matches the OEM SLIC and the key too ? The cert used is from the mod request i did (thanks to NoJuan999) , and the key , the one used (windows 7 ultimate, asus) is from the " Windows 7 OEM SLP Key Collection" post. If that keys are only for English ,where find the one for Spanish ?